Improvement in feed-water apparatus



UNITED STATES PATENT OFFICE.

JAMES H. PEASE, OF READING, PENNSYLVANIA.

IMPROVEMENT IN FEED-WATER APPARATUS.

To all whom it may concern:

Be it known that I, JAMES H. PEAsE, of Reading, in the county of Berksand State of Pennsylvania, have invented a new and Improved Arrangementand Combination of the Injector and Feed-Pump of Locomotive and otherBoilers; and I do hereby declare that the following is a full, clear,and exact description thereof, which will enable others skilled in theart to make and use the same, reference being had to the accompanyingdrawing, forming part of this specification.

The present invention principally consists in connecting the injectorand the feed-pump of a steam-boiler with one and the same suction-pipe,thereby dispensing with one suct-ionpipe and feed-pipe, with theirnecessary connections, and one check-valve, and also rendering itunnecessary to use a frost-pipe, now commonly applied in connection withthe feed-pipe of the force-pump.

In the accompanying plate of drawings the gure is a side elevation of alocomotive-boiler, showing my improved connection and combination of thefeed-pump and injector.

A in the drawing represents an injector of the class commonly known asGiffards, and B the feed-pump, of any of the ordinary constructions andarrangements, both being placed upon the same side of the boiler andcommunicatin g, through a common check-valve of the box O,with theinterior of the boilerD by means of a peculiar arrangement ofconnecting-pipes, to be presently explained. y

E is the feed-pipe, connected by a branch pipe, F, with the injector A,and by the suction-pipe Gr with the lower valve-box, H, of the pump l,the steam-pipe forming communication between the injector A and the domeJ of the boiler D; and K, a pipe connecting the lower end of injector orits discharge outlet with the upper valve box or chamber, L, of pump B,from which extends a pipe, M, connecting the pump with the check-valveof the boiler.

At the point N of the feed-pipe E is arranged a three-way cock, byturning which in the proper directions communication can be eitherestablished between it and the injector or the feed-pump, according asmay be desired, or with both at one and the same time. W'hen theinjector is in communication with the feedpipe. the water passing intothe injector through the connecting-pipe F is, by the usual operation ofthe injector', driven in the form of a jet and discharged through thepipe K into the upper portion of the pump, from whence, passing throughthe pipe M, it enters the boiler at the check-valve of vthe same, thepump, when in communication with the feed-pipe, drawing the waterthrough its suction-pipe and forcing it up and through the saine pipe Minto the boiler, as above explained.

Nzis a stop-cock placed in the dischargepipe of the overflow of theinjector, which stop-cock, by properly pulling the lever O, extending tothe locomotive-cab, can be opened or closed, as may be desired. By thusarranging a stopcock in the discharge pipe or orice of theinjector-overiiow the breakage of the jet, which now often occurs in theuse of the injector, especially when the locomotive is running at highspeed, and also running over switches or crossings of the railway-track,is entirely prevented, as by then keeping the stop cock closed theentrance of air to the overflow, and thus to thejet, is cut off, therebyalso obviating the necessity of frequent adjustment of theinjector-rams, the annoyance and trouble to accomplish which are wellknown to all conversant with the running of locomotive-engines. Inaddition to the above, the stop-cock also enables steam to be blownthrough the injector and its communicating-pipe with the boiler throughthe check-valve without the use of another steam-pipe, as has heretoforebeen necessary, for connecting the boiler and boiler-conducting pipe ofthe injector-a quite important advantage, the water in the overflow ofthe injector being lirst drawn out or discharged from the same byopening the said cock, when the cock is then closed and the steam blownthrough the injector, &c.,as above stated.

From the above description of the manner in which the injector andfeed-pump are connected with the check-valve of the boiler it is obviousthat the use of the pipes and other parts and connections hereinbeforerecited is entirely dispensed with 5 and, furthermore, that, by shuttingoftl the communication between the tender of the locomotive and theinjector and feed-pump, steam can be blown through all the connectingpipes of the injector and feed-pump with the boiler, as Well its throughthe inj eetor and feed-pump, (the water contained in the suction-pipe ofthe feed-pum p and the pump being' discharged through the nozzle R,having; asuitable stop-Cock, S, for opening,` and closing it,) and thusthe liability of their being,` frozen entirely prevented.

T is a lever connected at one end with stopeoek S ofthe feed-pump nozzleR and extend' ing to the locomotive-eab, by pulling` which lever in theproper direction the stop-cook S can be opened or closed, as muy bedesired, this stopboek being opened when the injector is in operation.

I claim as new and desire to secure by Letters Patent- 1. Thearrangement Vor` the injectorl of n looo- JAMES H. PEASE.

Witnesses M. M. LIVINGSTON, ALEX. F. ROBERTS.

